Overview
The ZF 0630.000.109 SHIM RING is a precision-engineered OEM genuine component designed for critical axial clearance adjustment within heavy-duty construction machinery transmissions. This hardened steel shim sits between the gear train and bearing housing, ensuring correct preload on the 0750117782: TAPERED ROLLER BEARING and maintaining optimal gear mesh alignment. As part of the ZF power take-off (PTO) and planetary gear assembly, the SKU 0630.000.109 directly controls end-play tolerances that prevent premature wear. Without this shim ring, the entire 4699100080: BASIC GEARBOX assembly risks catastrophic failure due to uncontrolled axial movement.
Symptoms of Failure
- Transmission oil seepage at the PTO housing: A worn or collapsed 0630.000.109 shim ring allows excessive bearing play, which distorts the 0634309122: SHAFT SEAL lip, causing gradual fluid loss.
- Intermittent gear slipping under load: When this shim ring loses its precise thickness, gear engagement depth decreases, leading to torque loss during excavation or lifting operations.
- Metallic grinding noise from the transmission sump: Axial play exceeding 0.15 mm forces the 0634801038: SEALING RING to contact rotating gears, producing audible wear debris.
- Vibration through the driveline during deceleration: A fatigued shim ring cannot maintain bearing preload, causing the 0630000091: SHIM RING stack to shift, resulting in harmonic resonance.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0630.000.109 |
| Inner Diameter (ID) | 85.0 mm ±0.05 |
| Outer Diameter (OD) | 120.0 mm ±0.08 |
| Thickness | 2.50 mm (selective fit range: 2.45–2.55 mm) |
| Material | Case-hardened 16MnCr5 steel (58–62 HRC) |
| Weight | 0.042 kg |
| OEM Reference | ZF 0630.000.109 |
| Surface Finish | Ground, Ra ≤ 0.8 µm |
Compatibility
This shim ring is engineered for ZF WG180, WG200, and WG310 series powershift transmissions commonly used in wheel loaders, dozers, and excavators. It also fits select ZF 4WG-200 and 6WG-310 models where the PTO output shaft requires precise axial shimming. For alternative thicknesses, consider the 0630000255: SHIM RING (2.55 mm) or 0630000058: SHIM RING (2.00 mm) for fine-tuning clearance. Always verify stack height using the 0630000059: SHIM RING and 0630000061: SHIM RING as supplementary adjustment washers.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4699100080 | BASIC GEARBOX | Main transmission housing assembly |
| 0634309122 | SHAFT SEAL | Prevents oil leakage at output shaft |
| 0634801038 | SEALING RING | Static seal between housing and cover |
| 0630000091 | SHIM RING | Alternate thickness shim (2.40 mm) |
| 0630000255 | SHIM RING | Thicker shim (2.55 mm) for increased preload |
| 0630000058 | SHIM RING | Thinner shim (2.00 mm) for reduced clearance |
| 0630000059 | SHIM RING | Intermediate shim (2.10 mm) |
| 0630000061 | SHIM RING | Intermediate shim (2.20 mm) |
| 0501341241 | WHEEL STUD | Fastener for final drive hub |
| 0750117782 | TAPERED ROLLER BEARING | Supports axial and radial loads |
